Photo: Kylmit Kinetic Vest

Photo: Kylmit Kinetic Vest

www.klymit.com

Blow-up vest: The world's first vest that lets you change warmth levels on the fly. Also windproof, it's made of inflatable chambers that can be filled with non-toxic, non-flammable argon gas, which is said to be warmer, thinner and lighter-weight than standard fabric insulators.

Blow-up vest: The world's first vest that lets you change warmth levels on the fly. Also windproof, it's made of inflatable chambers that can be filled with non-toxic, non-flammable argon gas, which is said to be warmer, thinner and lighter-weight than standard fabric insulators. (www.klymit.com)

Blow-up vest: The world's first vest that lets you change warmth levels on the fly. Also windproof, it's made of inflatable chambers that can be filled with non-toxic, non-flammable argon gas, which is said to be warmer, thinner and lighter-weight than standard fabric insulators.